This Keoghetal_OrganicCompaction_Readme.txt file was generated on 2021-10-19 by Molly Keogh

GENERAL INFORMATION

1. Title of Dataset: Supplemental tables S1 and S2 for “Organic matter accretion, shallow subsidence, and river delta sustainability”

2. Author Information
	A. Principal Investigator Contact Information
		Name: Molly Keogh
		Institution: University of Oregon
		Address: 1585 E 13th Ave., Eugene, OR 97403
		Email: mkeogh@uoregon.edu

	B. Associate or Co-investigator Contact Information
		Name: Torbjörn Törnqvist
		Institution: Tulane University
		Address: 6823 St. Charles Ave., New Orleans, LA 70118
		Email: tor@tulane.edu

	C. Alternate Contact Information
		Name: Alexander Kolker
		Institution: Louisiana Universities Marine Consortium
		Address: 8124 Highway 56, Chauvin, LA 70344
		Email: akolker@lumcon.edu

3. Date of data collection: Sediment cores were collected as a part of the Coastwide Reference Monitoring System in 2006-2010, in West Bay in 2014, Upper Lafourche in 2013, Davis Pond in 2015-2016, and Myrtle Grove in 2016. Calculations based on sediment core data were completed in 2018-2019.

4. Geographic location of data collection: Louisiana, USA, including: Coastwide Reference Monitoring System sites across coastal Louisiana (see http://cims.coastal.louisiana.gov for site information); West Bay Sediment Diversion receiving basin, Plaquemines Parish; upper Bayou Lafourche near Paincourtville and Napoleonville, Assumption Parish; Davis Pond Freshwater Diversion receiving basin, St. Charles Parish; and near Myrtle Grove, Plaquemines Parish. Specific core locations (latitude and longitude) are provided in Keoghetal_OrganicCompaction_TablesS1-S2.xlsx and Keoghetal_OrganicCompaction_TableS2_CoreLocations.csv.

5. Information about funding sources that supported the collection of the data: This research was funded by the US National Science Foundation (EAR-1349311) and the Coastal Science Assistantship Program of Louisiana Sea Grant.


SHARING/ACCESS INFORMATION

1. Licenses/restrictions placed on the data: N/A

2. Links to publications that cite or use the data: Data are published in conjunction with a manuscript in the Journal of Geophysical Research: Earth Surface (DOI: ).

3. Links to other publicly accessible locations of the data: N/A

4. Links/relationships to ancillary data sets: N/A

5. Was data derived from another source? Yes
	A. If yes, list source(s):
Coastwide Reference Monitoring System sediment core data were downloaded from http://cims.coastal.louisiana.gov; vertical accretion rates were calculated by Jankowski et al. (2017; DOI: 10.1038/ncomms14792).

Upper Lafourche sediment core data and carbon-14 ages are from Jankowski (2018; available at: https://digitallibrary.tulane.edu/islandora/object/tulane%3A83024); optically stimulated luminescence ages are from Shen et al. (2015; DOI: 10.1130/G36847.1).

Davis Pond sediment core data and vertical accretion rates are from Keogh et al. (2019; DOI: 10.1016/j.geomorph.2019.02.008).

Myrtle Grove sediment core data, carbon-14 ages, and optically stimulated luminescence ages are from Bridgeman (2018; available at: https://digitallibrary.tulane.edu/islandora/object/tulane%3A78959).

6. Recommended citation for this dataset: Keogh, M. E., Törnqvist, T. E., Kolker, A. S., Erkens, G., & Bridgeman, J. G. (2021). Supplemental tables S1 and S2 for “Organic matter accretion, shallow subsidence, and river delta sustainability” (Version 1). Dataverse. DOI.


DATA & FILE OVERVIEW

1. File List: 
Keoghetal_OrganicCompaction_TableS1_DataValues.csv: Detailed sediment core data and calculated sediment compaction parameters stemming from these data (including values only).

Keoghetal_OrganicCompaction_TableS1_DataFormulas.csv: Detailed sediment core data and formulas used to calculate sediment compaction parameters stemming from these data.

Keoghetal_OrganicCompaction_TableS2_CoreLocations.csv: Sediment core locations (latitude and longitude).

2. Relationship between files, if important: The three data files (Keoghetal_OrganicCompaction_TableS1_DataValues.tab, Keoghetal_OrganicCompaction_TableS1_DataFormulas.tab, Keoghetal_OrganicCompaction_TableS2_CoreLocations.tab) are part of the manuscript titled “Organic matter accretion, shallow subsidence, and river delta sustainability”, published in the Journal of Geophysical Research: Earth Surface (DOI: ).

3. Additional related data collected that was not included in the current data package: N/A

4. Are there multiple versions of the dataset? No
	A. If yes, name of file(s) that was updated: 
		i. Why was the file updated? 
		ii. When was the file updated? 


METHODOLOGICAL INFORMATION

1. Description of methods used for collection/generation of data: 
See the associated manuscript titled “Organic matter accretion, shallow subsidence, and river delta sustainability”, published in the Journal of Geophysical Research: Earth Surface (DOI: ).

2. Methods for processing the data: 
See the associated manuscript titled “Organic matter accretion, shallow subsidence, and river delta sustainability”, published in the Journal of Geophysical Research: Earth Surface (DOI: ).

3. Instrument- or software-specific information needed to interpret the data: N/A

4. Standards and calibration information, if appropriate: N/A

5. Environmental/experimental conditions: N/A

6. Describe any quality-assurance procedures performed on the data: N/A

7. People involved with sample collection, processing, analysis and/or submission: Molly Keogh, Torbjörn Törnqvist, Alexander Kolker, Gilles Erkens, Jonathan Bridgeman, Krista Jankowski, Alexander Ameen


DATA-SPECIFIC INFORMATION FOR: Keoghetal_OrganicCompaction_TableS1_DataValues.tab

1. Number of variables: 26

2. Number of cases/rows: 2995

3. Variable List: 
Core ID (name of sediment core)
Measured age (years)
Age error (years)
Midpoint of age sample (m)
Vertical accretion rate (cm per yr)
Calculated age (years)
Texture (from US Department of Agriculture sediment texture categories)
Thickness (m)
Dry bulk density (g per cubic cm)(estimated values: I2-I6, I77-I112, I180-I257, I1265-I1275)
Midpoint of sample interval (m) (estimated values: J2-J6, J77-J112, J180-J257, J1265-J1275)
LOI, loss-on-ignition (%) (estimated values: K2-K6, K77-K112, K180-K257, K1265-K1275)
Overlying mass (g per square cm)
Mass density (g per cubic cm)
Pore volume (dimensionless)
Unit weight of soil (kN per cubic m)
Total stress (kN per square m)
Pore water pressure (kN per square m)
Effective stress (kPa)
Uncompacted dry bulk density (g per cubic cm)
Decompacted thickness of interval (m)
Compaction (%)
Thickness lost to compaction (m)
Total thickness lost per core (m)
Total compaction per core (%)
Compaction ratio (%)
Compaction rate (mm per year per m)

4. Missing data codes: Blank cells indicate that the variable does not exist for or is not applicable to this sediment core interval.

5. Specialized formats or other abbreviations used: N/A


DATA-SPECIFIC INFORMATION FOR: Keoghetal_OrganicCompaction_TableS1_DataFormulas.tab

1. Number of variables: 26

2. Number of cases/rows: 2995

3. Variable List: 
Core ID (name of sediment core)
Measured age (years)
Age error (years)
Midpoint of age sample (m)
Vertical accretion rate (cm per yr)
Calculated age (years)
Texture (from US Department of Agriculture sediment texture categories)
Thickness (m)
Dry bulk density (g per cubic cm)(estimated values: I2-I6, I77-I112, I180-I257, I1265-I1275)
Midpoint of sample interval (m) (estimated values: J2-J6, J77-J112, J180-J257, J1265-J1275)
LOI, loss-on-ignition (%) (estimated values: K2-K6, K77-K112, K180-K257, K1265-K1275)
Overlying mass (g per square cm)
Mass density (g per cubic cm)
Pore volume (dimensionless)
Unit weight of soil (kN per cubic m)
Total stress (kN per square m)
Pore water pressure (kN per square m)
Effective stress (kPa)
Uncompacted dry bulk density (g per cubic cm)
Decompacted thickness of interval (m)
Compaction (%)
Thickness lost to compaction (m)
Total thickness lost per core (m)
Total compaction per core (%)
Compaction ratio (%)
Compaction rate (mm per year per m)

4. Missing data codes: Blank cells indicate that the variable does not exist for or is not applicable to this sediment core interval.

5. Specialized formats or other abbreviations used: N/A


DATA-SPECIFIC INFORMATION FOR: Keoghetal_OrganicCompaction_TableS2_CoreLocations.tab

1. Number of variables: 3

2. Number of cases/rows: 330

3. Variable List: 
Core ID (name of sediment core)
Latitude (degrees north)
Longitude (degrees east)

4. Missing data codes: N/A

5. Specialized formats or other abbreviations used: N/A



